title: Occurrence of bound 3-monochloropropan-1,2-diol content in commonly consumed foods in Hong Kong analysed by enzymatic hydrolysis and GC-MS detection.
abstract: The aim of this study was to determine the level of bound 3-monochloropropan-1,2-diol in foodstuffs commonly consumed in Hong Kong, China, by an enzymatic hydrolysis indirect method which proved to be free from interferences. A total of 290 samples were picked up randomly from the local market and analysed. About 73% of these samples were found to contain detectable amounts of bound 3-MCPD. Amongst the 73 food items, bound 3-MCPD was not detected in 13 food items, including extra virgin olive oil, beef ball/salami, beef flank, ham/Chinese ham, nuts, seeds, soy sauce, oyster sauce, butter, yoghurt, cream, cheese and milk. For those found to contain detectable bound 3-MCPD, the content ranged up to 2500 µg kg(-1). The highest mean bound 3-MCPD content among the 14 food groups was in biscuits (440 [50-860] µg kg(-1)), followed by fats and oils (390 [n.d.-2500] µg kg(-1)), snacks (270 [9-1000] µg kg(-1)), and Chinese pastry (270 [n.d.-1200] µg kg(-1)). Among the samples, the highest bound 3-MCPD content was in a grape seed oil (2500 µg kg(-1)), followed by a walnut flaky pastry (1200 µg kg(-1)) and a grilled corn (1000 µg kg(-1)). Basically, the results of this study agreed well with other published results in peer-reviewed journals, except for cheese, cream, ham, nuts and seeds.
authors.affiliation: Food Research Laboratory, Food and Environmental Hygiene Department, 4/F Public Health Laboratory Centre, Hong Kong, China. swcchung@fehd.gov.hk
authors.forename: Stephen W C
authors.initials: SW
authors.lastname: Chung
authors.forename: Benny T P
authors.initials: BT
authors.lastname: Chan
authors.forename: H Y
authors.initials: HY
authors.lastname: Chung
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiao
authors.forename: Y Y
authors.initials: YY
authors.lastname: Ho
mesh_terms: D004798:Enzymes / Q000378:metabolism*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D005990:Glycerol / Q000031:analogs & derivatives* / Q000032:analysis; D006723:Hong Kong; D006868:Hydrolysis; D000517:alpha-Chlorohydrin
chemical_list: D004798:Enzymes; D000517:alpha-Chlorohydrin; D005990:Glycerol